Roofing shingle



March 29, 1932.

J. H. DUNCAN ROOFING SHINGLE Filed Aug. 5, 1950 2 Sheets-Sheet gwuenlioi c] moan March 29, 1932.

J. H. DUNCAN ROOFING SHINGLE Filed Aug. 5,- 1930 2 Sheets-Sheet 2 amnion can Patented -Mar. 29 1932 UNITED STATES PATENTjOFFICE JOHN H. DUNCAN, OF SALEM, OREGON, ASSIGNOR OF ONE-HALF ,TO LAKE W. PRICE, OF

SALEM, OREGON ROOFING SHINGLE Application filed August 5, 1930. Serial No. 473,135.

This invention relates to roofing shingles,

. and more particularly to shingles of that type made of flexible water-proofamaterial and adapted to be laid in overlapped interlocking courses.

The invention has for one of its objects to 'provide shingles of the character stated wherein the interlocking connection between the shingles ofadjacent courses thereof shall be such as to positively prevent the separation of the shingles by the wind, and wherein the means through the medium of which the and quickly effected and such as to permit the shingles to be manufactured at a comparatively low cost and with comparatively little or no waste.

With the foregoing and other objects in view, the nature of which will appear as the description proceeds, the invention consists in the construction. combination and arrange ment of parts hereinafter fully described and claimed, and illustrated in'the accompanying drawings, wherein Figure 1 is a plan view of a fragmentary portion of a roof constructedfrom shingles embodyin my invention,

Figure is a plan view of one unit of the shingles;

Figure 3 is a plan view of another unit ofthe shingles;

Figure 4 is a plan view of a still further unit of the shingles; Figures 5 is a sectional .view taken on the plane indicated by the line 55 of Figure 1,

and

plane indicated by the line 6.6 of Figurel.

A roof constructed in accordance with my invention consists of courses of shingles A, a course of shingles B, and a course. of shingles C, all of which may be "madefrom Figure 6 is a sectional view taken on the.

any well known or appropriate flexible waterproof material.

. Each of the shingles A consistsof of elongated rectangular formation in. contour, andtabs 2 extending downwardly from the lower edge of the body "and of substantially triangular formation in contour. The tabs 2 are provided near the body 1 with notches 5 which extend upwardly from the side edges 3 of the tabs. The tabs 2 are provided below the notches 5 with slits 6 and U",

the slits 6 extending. inwardly and downwardly from the side edges 3 of the tabs, and the slits 6 extending downwardly and inwardly from the lower ends of the slits 6. The slits (3 and 6 provide tongues 7 which are provided at their upper edges and near the lower or attached ends with shoulders 7 and which taper from their shoulders in the direction of their free or upper ends.

Each of the shingles B consists of a body 8 of elongated rectangular formation in contour, and tabs 9 extending downwardly from the lower edge of the body and of substantially triangular formation, in contour. The tabs 9 are provided. near the body 8 with notches 11 which extend u-pwardly'from the side edges 10 of the tabs 9. The tabs 9 are provided below the notches 11 with slits 11 and 11, the .slits 11' extending inwardly and downwardly from the side edges 10 of the tabs 9, and theslits 11 extending downwardly and inwardly from the lower ends. of the slits 11. The slits 11 and '11? provide tongues 11?, which are provided atetheir upper edges and near their lower or attached ends with shoulders 11 and which taper from the shoulders in the direction of their free or upper ends. y

Each of the shingles 'C is similar'to the shingles A with the exception-that the tabs 2 thereof project upwardl from the upper edge of-the body 1 thereof In practice, a course of the shingles G is first applied to the roof of a building, and the shingles of this or the starting course are nailed to the roof at the points indicated by 12. A course of the shingles B isthen applied with their bodies 8 and tabs 9 overlapping the tabs 2 and bodies 1, respectively, of

abodyl' I the shingles C. The lower ends of the tabs 7 9 are straight, as shown at 9 and such ends are arranged in alignment with the lower edges of the bodies 1*. The shingles B are secured to the roof at the points indicated by 13.

A course of the shingles A is then applied located below the tabs 9, and the shoulders 7* of the tongues 7 are located above the notches 11, whereby toestablish such interlocking connection between the lower, end portions of the tabs 2 and the upper portions of the tabs 9 as to positively prevent the lower ends of the tabs from moving upwardly or curling upwardly. The remaining courses of the roof are made up from the shingles B and A, the shingles B of these courses having truely triangular tabs. The tabs of the shingles of these courses are located in the manner set forth. Furthermore, the shingles are so applied to the roof as to arrange the meeting. end edges of the bodies of the shingles of one course out of alignment with the corresponding edges of the shingles of' the next upper and lower courses. Due to the fact that the notches of the tabs extend upwardly, the tongues may be readilyvinter locked with'the tabs.-

Due to the interlocking connection established between the shingles of the adjacent courses by the notches 5 andull and by the tongues 7 and 11", the lower ends of the tabs are positively held against separation by the wind. By reference toFigure 1, it will be seen that the shingles are not only connected together in a manner to prevent the separation of the lower ends of the tabs and in a manner to hold such ends from curling upwardly but are also connected in a manner to give the roofing a highly artistic appearance, this being brought about by the peculiar formation of the notches andslits whlch provide the shingles with what appear to be curved corners. The shingles A and B may 1. A shingle of flexible water-proof material, comprising an elongated body, and a plurality of triangular tabs extending downwardly from one edge of the body, the tabs being provided near their upperv ends with notches extending upwardly from the side edges of the tabs,'the tabs being provided between their lower ends and the notcheswith slits extending inwardly and downwardly from the side edges of the tabs, and the tabs being provided with slits extending downwardly and inwardly from the lower ends of said first slits, the slits formin tongues provided at their inner edges an .near their lower or attached ends with shoulders and tapered from the shoulders in the direction of their 11. per or free ends.

2. A shingle of terial, comprising an elongated body, and a exible water-proof ma plurality of triangular tabs extending downwardly from one edge of the body, the tabs being provided near their upper ends with notches extending upwardly from the side edges of the tabs, the tabs being provided between their lower ends and the notches with slits extending inwardly and downwardly from the side edges of the tabs, and the tabs being provided with slits extending downwardly and inwardly from the lower ends of said first slits, the slits forming tongues provided at their inner edges and near their lower or attached ends with shoulders and tapered from the shoulders in of their upper or free ends.

the direction In testimony whereof I hereunto aflix my signature. JOHN H. DUNCAN.

be formed from a single strip of roofing material by cutting the strip along a zigzag line and at the same time cuttin the strip to form the notches 5 and 11 and t e slits 6 and 11.

While I have described the principle of the invention, together with the structure which I now consider the preferred embodiment thereof, itisto be understood that the structure shownis merelyillustrative andthat such changes may be made, when'desired, as

fall within the scope of the invention as claimed. 

